I didn't know you needed symptoms before 3. I think maybe that would be for the more severe autism. I think a lot of people with Aspberger's are intelligent and high-functioning so they may go undiagnosed.
I'm a woman and I've wondered this about myself as well. My main issues are being unable to read non-verbal signals (facial expressions, tone of voice, etc.) and also not sensing when someone is being sarcastic. Also I often say things other people find rude or socially unacceptable. I have hurt people's feelings because of this.
I am not sure what stim means. I definitely played pretend, but I would think most children do that. I did have some quirks that may be part of autism or OCD.